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Whitmoreite Kryzhanovskite Laueite & Jahnsite

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BCK664811

Whitmoreite Kryzhanovskite Laueite & Jahnsite

Kay Robertson collection
Rare Mineral

Description Tabs

Description
Locality: 
Big Chief Mine, Keystone, Glendale, Pennington County, South Dakota, United States of America
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 4.2 × 2.3 cm
Description

You are bidding on a very vuggy small sample that is host to numerous species from this understudied mine. Dark brown octahedra of kryzhanovskite line several cavities on which many secondary species have grown. Land mines of whitmoreite are present with numerous sprays of jahnsite, laueite and rockbridgeite. Kay Robertson collection and label. 

Mineral Data
What's on the rock

Whitmoreite

Formula: 
Fe2+Fe3+2(PO4)2(OH)2·4H2O
Strunz: 
8.DC.15
Hardness: 
3.0
Type Locality: 
Palermo No. 1 Mine (Palermo No. 1 pegmatite; Hartford Mine; GE Mine), Groton, Grafton Co., New Hampshire, USA

Kryzhanovskite

Formula: 
(Fe3+,Mn2+)3(PO4)2(OH,H2O)3
Strunz: 
8.CC.05
Hardness: 
3.5 - 4.0
Type Locality: 
Ak-Kezen' pegmatite, Belogorskii Town, Kalba Range, Eastern Kazakhstan Province (Shyghys Qazaqstan Oblysy; Vostochno-Kazakhstanskaya Oblast'), Kazakhstan...

Laueite

Formula: 
Mn2+Fe3+2(PO4)2(OH)2·8H2O
Strunz: 
8.DC.30
Hardness: 
3.0
Streak: 
White
Type Locality: 
Hagendorf South Pegmatite (Cornelia Mine; Hagendorf South Open Cut), Hagendorf, Waidhaus, Upper Palatinate, Bavaria, Germany

Jahnsite

Synonym Of: 

Jahnsite-(CaMnFe)

Formula: 
{Ca}{Mn2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
4.0

Jahnsite-(CaMnMg)

Formula: 
{Ca}{Mn2+}{(Mg,Fe2+)2}{Fe3+2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
4.0

Jahnsite-(CaMnMn)

Formula: 
{Ca}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
4.0

Jahnsite-(MnMnMn)

Formula: 
{Mn2+}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2·8H2O
Strunz: 
8.DH.15
Hardness: 
4.0

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